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Burst-mode control method for low input power consumption in resonant converters and related control device


Title: Burst-mode control method for low input power consumption in resonant converters and related control device.
Abstract: An effective method enhances energy saving at low load in a resonant converter with a hysteretic control scheme for implementing burst-mode at light load. The method causes a current controlled oscillator of the converter to stop oscillating when a feedback control current of the output voltage of the converter reaches a first threshold value, and introduces a nonlinearity in the functional relation between the frequency of oscillation and said feedback control current or in a derivative of the functional relation, while the control current is between a lower, second threshold value and the first threshold value, such that the frequency of oscillation remains equal or smaller than the frequency of oscillation when the control current is equal to the second threshold value. Several circuital implementations are illustrated, all of simple realization without requiring any costly microcontroller. ...
USPTO Applicaton #: #20140016362
Inventors: Claudio Adragna, Claudio Spini, Aldo Vittorio Novelli, Fabrizio Bognanni



The Patent Description & Claims data below is from USPTO Patent Application 20140016362, Burst-mode control method for low input power consumption in resonant converters and related control device.




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Power converters with quasi-zero power consumption
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stats Patent Info
Application #
US 20140016362 A1
Publish Date
01/16/2014
Document #
13931564
File Date
06/28/2013
USPTO Class
363 2102
Other USPTO Classes
International Class
02M3/335
Drawings
21


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Retic
Feedback Control
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